Ronya is a Swiss roll-cat hybrid character who roams the deserted streets of a post-apocalyptic Tokyo, a world devoid of humans. She shares this altered landscape with fellow snack-animal hybrids: Donyatsu (a doughnut-cat), Bagel (a bagel-cat), Kumacaron (a macaron-bear), and Baumcougar (a Baumkuchen-cougar). Together, this group traverses the ruins shaped by humanity's disappearance, where survival remains their primary focus. Ronya's specific background, personality traits, relationships, and character development remain undefined within the available official media. The known details are confined to her distinctive hybrid design and her role within this core premise.